Predatory dinosaurs were an important ecological component of terrestrial Mesozoic ecosystems. Though theropod dinosaurs carried this role during the Jurassic and Cretaceous Periods (and probably the post-Carnian portion of the Triassic). it is difficult to depict the Carnian scenario. due to the scarcity of fossils. https://www.relicsbook.com/product-category/autographed-framed-baseballs/